muscles Flashcards
scapular UR mm
mid trap
upper trap
serratus anterior
scapular DR mm
rhomboids
low trap
contents of the carpal tunnel
FDP FDS FHL FCR medial nn. (11)
biceps brachii
o, I,
o: 2 heads (coracoid process of the scapula and the supraglenoid tubercle of the scapula)
inserts into the radial tuberosity
biceps brachii nn innervation
musculocutaneous (C5, C6)
muscles of the anatomical snuffbox
which 2 are involved with DeQuervain’s tenosynovitis?
- Extensor pollicis longus
- extensor pollicis brevis **
- abductor pollicis longus **
extensor mass muscles are innervated by the?
radial nerve (even extensor carpi ulnaris )
flexor mass muscles are innervated by the ?
median nerve (except the FDP (3/4 digits), and the flexor carpi ulnaris (ulnar nn.)
lumbricals are all innervated by the ulnar except what?
1st and 2nd muscles (digits innervated by the median nn.)
triceps brachii innervation
radial nerve
brachioradialis innervation
radial nerve
deltoid innervation
axillary nerve
supraspinatous
action and innervation
suprascapular and abduction
pec major
-upper fibers innervation
lateral pectoral nn (C5-C7)
pec major
-lower fibers innervation
medial pectoral nn (C6-T1)
difference between the test postions of the pectoralis major and minor
pec major: resistance against the forearm in the direction of the horizontal abduction.
pec minor: resistance against the forearm obliquely in a lateral and cranial direction
pec. minor innervation
medial pectoral (C6-T1)
pec major
origin and insertion
o: anterior surface of the sternal half of the clavicle
i: greater tubercle of the humerus
infraspinatus
action
and
innervation
suprascapular nerve
ER of the shoulder
infraspinatus
origin and insertion
O: fossa of the scapula
I: greater tubercle of humerus
supraspinatus
origin
supraspinatus fossa of the scapula
three muscles that insert onto the greater tubercle of the humerus
infraspinatus, supraspinatus, and teres minor
teres minor innervation
axillary nerve
teres major innervation and action
lower subscapular
IR, adducts, extends the shoulder joint
2 muscles that insert onto the lesser tubercle of the scapula
- teres major and the subscapularis
innervation to subscap
upper and lower subscapular (C5-C7)
origin and insertion of latissimus dorsi
o: SP if theT6-T12 , thoracolumbar fascia, iliac crest, inferior angle of scapula
i: intertubercular groove of the humerus
innervation to the LD
thoracodorsal (C6-C8)
testing of LD
patient is prone
IR and add. of shoulder
resistance into abduction and slight flexion
rhomboids innervation
dorsal scapular (C4, C5)
levator scap innervation
cervical 3 and 4
dorsal scap C4 and 5
difference between test positions of the rhomboids and mid trap
rhomboids you are IR thumb down and middle trap you are ER thumb up
Both prone in 90 shoulder abduction, elbow extension
Gluteus medius innervation
superior gluteal nerve
gluteus minimus innervation
superior gluteal nerve
lateral rotators of the hip
piriformis
QF
obturator internus and externus
gemellus superior and inferior
hip adductors of the hip
pectineous adductor magnus adductor longus adductor brevis gracilis
hip adductors for the most part innervated by which nerve?
Obturator nerve (L2-L4)
gracilis insertion and origin
inserts on pes anserine along with semitendinosus and Sartorius
comes from the pubic bone
sartorius actions
flexion, abduction, and ER
TFl innervation
superior gluteal
TFL origin and insertion
from iliac crest to the IT band
QF origin and insertion
AIIS to the patella
semitendinosus and membranosus actions
IR and flexion (located on medial side) the knee
SM and ST innervation
sciatic nerve
biceps femoris actions
ER and flexion. of the knee
muscles that pass the knee joint and hip joint
SM, ST, BF (long head), RF
soleus does not pass the knee joint, gastrocs do
Both innervated by tibial nerve
TRUE
All peroneals do what action?
eversion
Peroneus tertius action, origin, insertion, innervation?
action: eversion, PF
origin: fibula
insertion base of the 5th metatarsal
innervation: deep peroneal (L4-S1)
peroneus brevis action, origin, ins, inn,
action: DF, eversion
origin: fibula
insertion: base of the 5th metatarsal
innervation: superficial peroneal (L4-S1)
peroneus longus action, or, ins, inn
action: PF, eversion
origin: fibula,
ins: first metatarsal (lateral) medial cuneiform
innervation: superficial peroneal (L4-s1)
tibialis posterior actions, or, ins, inn
actions: PF, inversion
origin: tibia
insertion: navicular 3 cuneiforms, cuboid, bases of 2-4th metatarsals
innervation: tibial (L4-S1)
tibialis anterior actions, or, ins, inn
actions: DF, inversion
origin: tibia
in: medial cuneiform and the base of the first metatarsal
inn: deep peroneal (L4-S1)
which two muscles extend the MTP joints and the IP joints?
extensor digitorum longus (2-5) and brevis (only 1-4, 2-4 resp.)
TDH run on the what side?
medial side tibialis posterior flexor digitorum flexor hallucis longus with the tibial artery and nerve
PAD and DAB and lumbricals of the feet are innervated by what nerve
?
tibial (S1 and S2)
